An examination of the No. 1 killer of Americans---heart disease, which strikes more than 50 percent of its victims without warning. Following the documentary, Larry King interviews medical experts about how to improve one's heart health.

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Premise: An examination of the No. 1 killer of Americans---heart disease, which strikes more than 50 percent of its victims without warning. Following the documentary, Larry King interviews medical experts about how to improve one's heart health.
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